Modify the error message and other general messages that appear in your form. You can provide your own error messages, change form language and get your forms to work exactly the way you want them to.

To do so,
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Go to Settings > Translation & Messages > Custom Messages. You will find all the error messages (validation messages, mandatory messages and other general messages) here.
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Enter the custom messages in the text boxes provided.
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Once done,
Save
all the changes made. The standard error messages of your form will now be replaced with your custom messages.
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To reset all the customization done to the messages, click
Reset All